Semi-elastic compound for covering electric wires



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comma 0R msufi Examiner PATENT OFFICE.

HEYRY \V. MERRITT, OF SOMERVILLE, ASSIGNOR TO WILLIAM H. IRELAND, OF BOSTON, MASSACHUSETTS.

SEM l-ELASTIC ,COMPOU ND FOR COVERING ELECTRIC WIRES, 61c. f

SPEPIIICATION forming part of Letters Patent No. 366,337, dated iuly 12. 1887. Application filed February 12, 1887. Serial X0. 227,438. (No specimens.)

To aZZ whom it may concern:

Be it known that I, HENRY W. MERRITT, of Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Semi-Elastic Compounds, of which the following is a specification.

The object of my invention is to form a mixture which shall constitute a compound that is quite flexible and yet capable of resisting considerable pressure or strain; also of the nature to resist heat and cold and to be a nonconductor of electricity; also to be of such a nature as to be quite fluid when hot.

I 5 This invention I putin practice by mixing its several ingredients in accordance with the following formula: First, I dilute two pounds of the fluid silicate of soda with one quart of water. Ithen add one pound of fir'balsam, Burgundy 2o pitch,or an equivalent 0 some pitc compound, having the wholemass quite, hot,so as tomake a complete union of the ingredients. Into this mass I stir four pounds of grouhnd asbestus or its equivalent of neutral eart s; t en add one ounce of sugar, sor- 25 Bum or lucose, and when all the ingredim are tfioroughlyincorporated I makeasaturat'ed solution containing about three grains of oxalic acid dissolved in hot water, and add its to e compound. 50 This compound is used for filling pipes that"- iuclose electric wires, for .nniting metals or metals and wood, and for such other uses as a semi-elastic adhesive compound may be required for.

I claim The compound above described, consisting of silicate of soda, fir-balsam or an equivalent, asbestos, sugar, and oxalic acid, and water, compounded substantially as described, and 0 for the purpose set forth.

HENRY W. MERRITT. Witnesses:

W. H. Rooms, WILLIAM Ensox. 

